When the album was released last December, it hit debuted at No. 2., just behind Taylor Swift’s Red. Jukebox has been hanging out fairly high on the Billboard 200 albums chart since then, and sat at No. 2 last week.

But with some help from a massive sale on Amazon, which sold the album for $1.99 and then $3.99 last week, Mars’ second release finally had enough juice to top the charts, with Nielsen SoundScan reporting 95,000 copies sold. That’s a 96% increase from its performance the week before, giving Mars his first ever No. 1 album. (Billboard’s math wizards have deduced that without Amazon’s efforts, Jukebox would likely have ranked at No. 2 this week.)

So who would’ve been No. 1 otherwise? All signs point to Atoms for Peace, the Thom Yorke-led group whose debut Amok came in at No. 2 with 50,000 moved units.

Before Mars’ ascent, Mumford and Sons’ Grammy-winning Babel had a two-week hold on the top spot, but this week it fell to No. 3, with 43,000 sold.

After Mars, the week’s other big chart riser was Macklemore & Ryan Lewis’s The Heist, which was a part of Amazon’s sale as well. The duo, also buoyed by their Saturday Night Live gig last weekend, jumped from No. 16 to No. 4, selling 42,000 copies.

And rounding out the top five is… Hillsong United, a group connected to a Pentecostal megachurch in Australia. Their album Zion sold 34,000 in sales, marking Hillsong United’s best sales week ever. Again, that’s Hillsong United, of the Australian Hillsong Church, with the No. 5 album in the country.